aDepartment of Civil and Resource Engineering, Dalhousie University, Halifax, NS, Canada. bCentre for Hydrogeology and Geothermics, University of Neuchâtel, Neuchâtel, Switzerland. Received May 9, 2018. Accepted August 15, 2018. Bahrani N, Kaiser PK. 2013. Strength degradation of non-persistently jointed rockmass. International Journal of Rock Mechanics and Mining Sciences 62: 28-33 Crossref, Google Scholar. Bahrani N, Kaiser PK. 2017. Estimation of confined peak strength of crack-damaged rocks.